AD9276 datasheet(6/49 Pages) AD

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AD9276

Rev. 0 | Page 5 of 48

Parameter1

Test Conditions/Comments

Min

Typ

Max

Unit

Noise Figure

GAIN+ = 1.6 V, RS = 50 Ω

Active Termination Matched

Mode I/Mode II/Mode III

LNA gain = 15.6 dB, RFB = 200 Ω

8.0/7.7/7.6

LNA gain = 17.9 dB, RFB = 250 Ω

6.6/6.2/6.1

LNA gain = 21.3 dB, RFB = 350 Ω

4.7/4.5/4.4

Unterminated

LNA gain = 15.6 dB, RFB = ∞

4.7

LNA gain = 17.9 dB, RFB = ∞

3.7

LNA gain = 21.3 dB, RFB = ∞

2.8

Correlated Noise Ratio

No signal, correlated/uncorrelated

−30

Output Offset

−35

+35

LSB

Signal-to-Noise Ratio (SNR)

Mode I/Mode II/Mode III

fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V

65/64/63

dBFS

fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V

57/56/54.5

dBFS

Harmonic Distortion

Mode I/Mode II/Mode III

Second Harmonic

fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V

−62/−58/−55

dBc

fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V

−60/−61/−58

dBc

Third Harmonic

fIN = 5 MHz at −10 dBFS, GAIN+ = 0 V

−71/−60/−60

dBc

fIN = 5 MHz at −1 dBFS, GAIN+ = 1.6 V

−57/−55/−56

dBc

Two-Tone Intermodulation (IMD3)

fRF1 = 5.015 MHz, fRF2 = 5.020 MHz,

ARF1 = 0 dB, ARF2 = −20 dB, GAIN+ = 1.6 V,

IMD3 relative to ARF2

−55

dBc

Channel-to-Channel Crosstalk

fIN = 5 MHz at −1 dBFS

−70

Overrange condition2

−65

Channel-to-Channel Delay

Variation

Full TGC path, fIN = 5 MHz, GAIN+ = 0 V to 1.6 V

0.3

Degrees

PGA Gain

Differential input to differential output

21/24/27/30

GAIN ACCURACY

25°C

Gain Law Conformance Error

Mode I/Mode II/Mode III

0 < GAIN+ < 0.16 V

1.5

0.16 V < GAIN+ < 1.44 V

−1.5/−1.5/

−1.6

+1.5/+1.5/

+1.6

1.44 V < GAIN+ < 1.6 V

−1.5/−1.5/

−1.6

−2.5

+1.5/+1.5/

+1.6

Linear Gain Error

GAIN+ = 0.8 V, normalized for ideal AAF loss

−1.5

+1.5

Channel-to-Channel Matching

0.16 V < GAIN+ < 1.44 V

0.1

GAIN CONTROL INTERFACE

Normal Operating Range

1.6

Gain Range

GAIN+ = 0 V to 1.6 V

−42

Scale Factor

28.5

dB/V

Response Time

42 dB change

750

GAIN+ Impedance

Single-ended

MΩ

GAIN− Impedance

Single-ended

kΩ

CW DOPPLER MODE

LO Frequency

fLO = f4LO/4

MHz

Phase Increment

Per channel

22.5

Degrees

Output DC Bias (Single-Ended)

CWI+, CWI−, CWQ+, CWQ−

1.5

Maximum Output Swing

Per CWI+, CWI−, CWQ+, CWQ−, per channel

enabled

±1.25

Transconductance (Differential)

Demodulated IOUT/VIN, each I or Q output

LNA gain = 15.6 dB

1.8

mA/V

LNA gain = 17.9 dB

2.4

mA/V

LNA gain = 21.3 dB

3.5

mA/V

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